Quickstart

Name: ATick
Author: Axonate Tech

Sign a PDF with a .pfx (or .p12 / .pem) and a visible green-tick appearance.

Quickstart.java

import io.github.aniketc068.atick.Atick;
import java.nio.file.*;

public class Quickstart {
    public static void main(String[] args) throws Exception {
        byte[] pdf = Files.readAllBytes(Paths.get("doc.pdf"));
        byte[] pfx = Files.readAllBytes(Paths.get("my.pfx"));

        byte[] signed = Atick.signPfx(pdf, pfx,
            "{\"password\":\"••••\",\"cn\":\"Axonate Tech\",\"reason\":\"Approved\","
          + "\"green_tick\":true,\"page\":1,\"rect\":[300,55,575,175],"
          + "\"pades\":true,\"timestamp\":true,\"ltv\":true}");   // PAdES-B-LT

        Files.write(Paths.get("signed.pdf"), signed);
    }
}

Open signed.pdf in Adobe Reader — for a trusted certificate it shows a valid green tick and “Signed and all signatures are valid.”

What the options mean

Option	Meaning
`password`	the PFX/P12 password (use `""` for a PEM file)
`cn`	the signer name shown in the appearance
`reason`	the reason recorded in the signature
`green_tick`	draw the validity mark Adobe greens for a valid+trusted certificate
`page`, `rect`	where to draw the appearance — page number and `[x1,y1,x2,y2]` (PDF points)
`pades`	produce a PAdES (ETSI) signature
`timestamp`	add an RFC-3161 timestamp (PAdES-B-T)
`ltv`	embed the chain + revocation for long-term validation (PAdES-B-LT)

A minimal, invisible signature

Invisible.java

byte[] signed = Atick.signPfx(pdf, pfx,
    "{\"password\":\"••••\",\"placements\":[],\"pades\":true}");   // valid, nothing drawn

Catching errors

Every failure is a normal Java exception:

Errors.java

try {
    Atick.signPfx(pdf, pfx, "{\"password\":\"wrong\"}");
} catch (Atick.AtickException e) {
    System.out.println("signing failed: " + e.getMessage());
}

Next: see Signing for all the signing options, or the API reference.